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    Control system for cooling fan assembly having variable pitch blades
    21.
    发明授权
    Control system for cooling fan assembly having variable pitch blades 有权
    具有变桨距叶片的冷却风扇组件控制系统

    公开(公告)号：US06253716B1

    公开(公告)日：2001-07-03

    申请号：US09349274

    申请日：1999-07-07

    申请人： Bradford Palmer ,  Xin Feng ,  Chris Nelson

    发明人： Bradford Palmer ,  Xin Feng ,  Chris Nelson

    IPC分类号： F01P702

    CPC分类号： F04D29/362 ,  F01P7/06 ,  F01P2023/00 ,  F04D27/002

    摘要： A fan assembly (10) which incorporates variable pitched blades (152), is driven by the engine of a vehicle and is used in cooling the engine. A control system (248) is provided which is responsive to at least one signal representative of an operating parameter of the engine and a second signal indicative of a desired cooling requirement to establish an efficient pitch for the blades of the fan assembly. In one embodiment, the speed of the engine is sensed and used in combination with a cooling requirement signal developed by the engine control module (205) to regulate the pitch of the fan assembly. In a second embodiment, engine charge air temperature and coolant temperature signals are utilized in establishing the desired pitch. Furthermore, fuzzy logic controls (290) can be utilized to anticipate the cooling needs of the engine based on variations in the overall dynamic system as derived from information available through the engine control module.

    摘要翻译： 包括可变斜叶片（152）的风扇组件（10）由车辆的发动机驱动，并用于冷却发动机。 提供了控制系统（248），其响应于表示发动机的操作参数的至少一个信号和指示期望的冷却要求的第二信号，以建立风扇组件的叶片的有效间距。 在一个实施例中，发动机的速度被感测并与由发动机控制模块（205）开发的冷却要求信号结合使用，以调节风扇组件的桨距。 在第二实施例中，利用发动机增压空气温度和冷却剂温度信号来建立所需的间距。 此外，模糊逻辑控制（290）可以用于基于通过发动机控制模块获得的信息导出的总体动态系统的变化来预测发动机的冷却需求。